Passively mode-locked dye laser with spatial dispersion in the gain medium

Michailov, N. I.

doi:10.1364/josab.9.001369

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…Since the spectrum is spatially dispersed, mode competition is canceled in this additional gain medium (different frequencies do not share the same gain volume, rendering the gain effectively inhomogeneous). While placing a single gain medium in a spatially-dispersed position was considered in the past both theoretically [104,105] and experimentally [106], however, such a laser is inherently pump-inefficient, since it requires pumping of a much wider volume in the gain medium well above medium. It is therefore most beneficial to combine a large homogeneous (efficient) gain with a small amount of inhomogeneous (inefficient) gain, where the small shaped inhomogeneous gain acts as a lever to steer the competition in the large homogeneous gain medium.…”

Section: Two-color Pulses By Intra-cavity Gain Shapingmentioning

confidence: 99%

A Review of Cavity Design for Kerr Lens Mode-Locked Solid-State Lasers

Yefet

Pe'er

2013

Applied Sciences

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We provide a critical review of the fundamental concepts of Kerr lens mode-locking (KLM), along with a detailed description of the experimental considerations involved in the realization of a mode-locked oscillator. In addition, we review recent developments that overcome inherent limitations and disadvantages in standard KLM lasers. Our review is aimed mainly at readers who wish to realize/maintain such an oscillator or for those who wish to better understand this major experimental tool.

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Section: Two-color Pulses By Intra-cavity Gain Shapingmentioning

confidence: 99%

A Review of Cavity Design for Kerr Lens Mode-Locked Solid-State Lasers

Yefet

Pe'er

2013

Applied Sciences

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“…As demonstrated here on, this method allows steering the oscillation towards the desired double lobed (or more) spectrum, and shaping of the pulse spectrum almost at will, while preserving the total pulse power, and with minimal added pump power. We note that the concept of passively mode-locked laser with a single gain medium in the dispersive arm was introduced before [19]. However, using only inhomogeneous gain is highly inefficient in pump energy, as it requires pumping of a much larger volume.…”

Section: Introductionmentioning

confidence: 99%

Intra-cavity gain shaping of mode-locked Ti:Sapphire laser oscillations

2012

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The gain properties of an oscillator strongly affect its behavior. When the gain is homogeneous, different modes compete for gain resources in a 'winner takes all' manner, whereas with inhomogeneous gain, modes can coexist if they utilize different gain resources. We demonstrate precise control over the mode competition in a mode locked Ti:sapphire oscillator by manipulation and spectral shaping of the gain properties, thus steering the competition towards a desired, otherwise inaccessible, oscillation. Specifically, by adding a small amount of spectrally shaped inhomogeneous gain to the standard homogeneous gain oscillator, we selectively enhance a desired two-color oscillation, which is inherently unstable to mode competition and could not exist in a purely homogeneous gain oscillator. By tuning the parameters of the additional inhomogeneous gain we flexibly control the center wavelengths, relative intensities and widths of the two colors.

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